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AR2700
User’s Manual
5.1
Setting the range beginning and end points (QAx y)
The default setting for QA is x=0.000 and y=1.000 meters where
x
is the range beginning of
4mA and
y
is the range end of 20mA.
x>y, x<y, but x
≠y The current value can be calculated according to the following formula:
The resolution of x and y is 0.001 meters (float32).
The Measurement Window (Section 7.4 ) applies to the current loop output.
6.
Alarm Output(s) Operation (Q1, Q2)
The alarm outputs use Brown and Blue for Q1 and Black and Blue for Q2. See section 3.1.6
for the connection diagram.
Alarm output is also referred to as
digital switching output
. Users of the AR2700 laser sensor
may wish to monitor the position of an object and receive an alarm if it moves beyond set
distance limits. To do this, users establish parameters of a measurement threshold, range,
hysteresis and state. The alarm signals whether the preset hysteresis switching range is
exceeded or fallen short of.
A load resistor > 150 Ohms / 6 W (max. operating voltage of 30 V; max. load current of 0.2 A)
must be switched against Ground (Blue wire) at the switching output. Do not exceed a load
current of 0.2 A
The alarm output is updated with each sample measured.
